CVE-2026-27950 FreeRDP heap-use-after-free in update_pointer_new(SDL): Fix Applied in the Wrong File

Medium 5.5 Published 25 Feb 2026 Updated 26 Feb 2026

An incomplete fix for a heap-use-after-free in FreeRDP's SDL2 implementation allows attackers to potentially execute code or cause crashes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-27950?

CVE-2026-27950 is a medium-severity use after free vulnerability in Freerdp Freerdp, published on 25 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.

Weakness: CWE-416

Which versions are affected by CVE-2026-27950?

It affects 1 product.

Products include Freerdp Freerdp.

How do I fix CVE-2026-27950?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-27950 being exploited?

There is no known exploitation of CVE-2026-27950 in the wild and no public exploit code.

All Freerdp Freerdp vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-27950, GHSA-rvfg-86cr-5r6p, UBUNTU-CVE-2026-27950.